Hoval CompactGas, Техническая информация и инструкции по сборке, Страница: 29 / 38

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COMMISSIOnInG
Switzerland
Filling and replacement water, heating water
The following applies:
• Directive SWKI BT 102-01 “Water quality for building
services systems”
Requirement on the fi lling and replacement water:
Designation Reference value
Total hardness max. 1 °fH
Electric conductivity max. 100 µS/cm
pH value 6.0–8.5
Requirement on the heating water:
Designation Reference value
Total hardness max. 5 °fH
Electric conductivity max. 200 µS/cm
pH value 8.2–10
Chlorides max. 30 mg/l
Sulphates max. 50 mg/l
Oxygen max. 0.1 mg/l
Solute iron max. 0.5 mg/l
TOC total organic carbon content max. 30 mg/l
Manufacturer-specific specifications
• Hoval boilers and calorifi ers are suitable for heating
systems without signifi cant oxygen intake. (System
type I according to EN 14868).
• The following systems must be equipped with separate
circuits:
- Systems with continual oxygen intake (e.g. underfl oor
heating without diff usion-proof plastic piping)
- Systems with intermittent oxygen intake (e.g. requir-
ing frequent topping-up)
• In the case of bivalent heating systems, the values of
the heat generator with the strictest requirement for wa-
ter quality must be complied with.
• If only the boiler is replaced in an existing plant, it is not
recommended for the entire heating system to be re-
fi lled, provided that the heating water already contained
in the system complies with the relevant directives or
standards.
• Before fi lling new systems and, where necessary, exist-
ing heating systems containing heating water that does
not comply with the directives or standards, the heating
system must be professionally cleaned and fl ushed.
The boiler must not be fi lled until the heating system
has been fl ushed.
Frost protection agent
See separate engineering sheet “Use of frost protection
agent”.